Bits Timing Configuration - Cisco ASR 5000 Installation Manual

Cabling the Switch Processor Input/Output Line Card

BITS Timing Configuration

After connecting the BITS interface to the BITS, you must use the CLI to configure the type of timing signal
being supplied to the SPIO. Options include:
• E1 Frame Alignment Signal (FAS)
• E1 Multiframe with CRF (FAS+CRC)
• T1 Extended Superframe Format (ESF)
• T1 Superframe Format (D4)
For additional information on BITS configuration, refer to the BITS Port Configuration Mode Commands
chapter of the Command Line Interface Reference.
Connecting to the CO Alarm Interface
The Central Office (CO) Alarm interface utilizes a 10-pin Molex female-connector fro interconnection with
the three normally closed dry-contact relays. These relays trigger external audio and/or visual indicators for
the following three alarm levels:
• Minor Alarm: This alarm is triggered when a high temperature is detected on a card, causing the fan
• Major Alarm: This alarm is triggered by a:
• Critical Alarm: This alarm is triggered when a severe degradation in service is detected. For example,
The CO alarm interface pinout is provided in the following figure and table.
Figure 38: SPIO CO Alarm Interface Pinouts
tray to switch its fans to high speed.
• Hardware failure that places a card in an off-line state
• Power filter unit failure or removal from the chassis
• Failure of one or more fans on either the upper or lower fan tray
• Fan tray failure or either fan tray assembly is removed from the chassis
if the system is supporting a large number of subscribers and packet processing cards are removed thus
significantly reducing the amount of available CPU and memory resources.
BITS Timing Configuration
ASR 5000 Installation Guide
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